#循环


#先定义一个计数器
# count = 1
#
# while count < 10:
#     print("你好，世界")
#     count += 1


#计算 1- 100 的数字之和

conut = 1
count_ji = 1

while conut < 100:
    conut += 1
    count_ji += conut
print(count_ji)
